Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties

Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties

We demonstrate a two-dimensional absorbing photonic crystal with a uniform real part of the refractive index, but a periodically modulated imaginary part. It was realized through back-filling the voids of a periodic array of azo-dye-doped polymeric disks with the same undoped polymers. The photonic...

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Main Authors: Dai, Haitao, Leong, Eunice Sok Ping, Teng, Jing Hua, Sun, Xiaowei, Liu, Y. J.
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2013
Subjects:
DRNTU::Engineering::Electrical and electronic engineering
Online Access:https://hdl.handle.net/10356/99203
http://hdl.handle.net/10220/10928
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-992032020-03-07T13:57:24Z Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties Dai, Haitao Leong, Eunice Sok Ping Teng, Jing Hua Sun, Xiaowei Liu, Y. J. School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering We demonstrate a two-dimensional absorbing photonic crystal with a uniform real part of the refractive index, but a periodically modulated imaginary part. It was realized through back-filling the voids of a periodic array of azo-dye-doped polymeric disks with the same undoped polymers. The photonic crystals were characterized using the diffraction method. The experimental results showed that only the light in the spectral range where the azo-dye absorbed was diffracted, indicating that a purely absorbing photonic crystal was formed. This absorbing photonic crystal also showed switchable diffraction properties due to the trans-cis isomerization of the azo-dye under the light pump. Published version 2013-07-04T02:48:54Z 2019-12-06T20:04:32Z 2013-07-04T02:48:54Z 2019-12-06T20:04:32Z 2011 2011 Journal Article Liu, Y. J., Dai, H., Leong, E. S. P., Teng, J. H., & Sun, X. W. (2011). Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties. Optical materials express, 2(1), 55-61. 2159-3930 https://hdl.handle.net/10356/99203 http://hdl.handle.net/10220/10928 10.1364/OME.2.000055 en Optical materials express © 2011 Optical Society of America. This paper was published in Optical Materials Express and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI: [http://dx.doi.org/10.1364/OME.2.000055]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering
spellingShingle DRNTU::Engineering::Electrical and electronic engineering
Dai, Haitao
Leong, Eunice Sok Ping
Teng, Jing Hua
Sun, Xiaowei
Liu, Y. J.
Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties
description We demonstrate a two-dimensional absorbing photonic crystal with a uniform real part of the refractive index, but a periodically modulated imaginary part. It was realized through back-filling the voids of a periodic array of azo-dye-doped polymeric disks with the same undoped polymers. The photonic crystals were characterized using the diffraction method. The experimental results showed that only the light in the spectral range where the azo-dye absorbed was diffracted, indicating that a purely absorbing photonic crystal was formed. This absorbing photonic crystal also showed switchable diffraction properties due to the trans-cis isomerization of the azo-dye under the light pump.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Dai, Haitao
Leong, Eunice Sok Ping
Teng, Jing Hua
Sun, Xiaowei
Liu, Y. J.
format Article
author Dai, Haitao
Leong, Eunice Sok Ping
Teng, Jing Hua
Sun, Xiaowei
Liu, Y. J.
author_sort Dai, Haitao
title Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties
title_short Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties
title_full Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties
title_fullStr Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties
title_full_unstemmed Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties
title_sort azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties
publishDate 2013
url https://hdl.handle.net/10356/99203
http://hdl.handle.net/10220/10928
_version_ 1681047180450725888

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